ARRT Contrast Media and Pharmacology

Question 1

Which type of iodinated contrast media is considered safest for patients with a history of allergic reactions?

Accepted Answer

Nonionic low-osmolar

Answer

Nonionic low-osmolar contrast media have significantly fewer adverse reactions and are the preferred choice for high-risk patients.

Question 2

What is the most common mild adverse reaction to iodinated contrast media?

Accepted Answer

Nausea and vomiting

Answer

Nausea and vomiting are the most frequently reported mild reactions following intravenous iodinated contrast administration.

Question 3

Before administering iodinated contrast media, which lab value is most critical to assess renal function?

Accepted Answer

Serum creatinine / eGFR

Answer

Serum creatinine and eGFR are used to evaluate kidney function and assess the risk of contrast-induced nephropathy.

Question 4

Which medication is commonly used as premedication to reduce the risk of a repeat contrast reaction?

Accepted Answer

Prednisone (corticosteroid)

Answer

Oral corticosteroids such as prednisone are given prior to contrast injection in patients with a history of prior reactions to reduce reaction severity.

Question 5

What is the primary treatment for anaphylactic shock caused by contrast media?

Accepted Answer

Epinephrine IM

Answer

Epinephrine administered intramuscularly is the first-line emergency treatment for anaphylaxis regardless of cause.

ARRT - American Registry of Radiologic Technologists Practice Test

ARRT - American Registry of Radiologic Technologists Practice Test

ARRT Contrast Media and Pharmacology